NVD / CVE Program· CNA imaginationtech

CVE-2026-34196: GPU DDK - UAF read and/or write of arbitrary physical memory due to integer truncation in PMRDevPhysAddrOSMem

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Software installed and run as a non-privileged user may conduct improper GPU system calls to cause an integer overflow and map two GPU virtual addresses to the same physical address. One of these virutal mappings can be freed along with the physical page, allowing for a read/write UAF via the second mapping The second virtual mapping references a physical address that has been freed after the first virtual mapping has been freed. This allows the physical memory to be allocated (for example) by another process and read/written to.

HighCVSS 7.8 · v3.1—No exploit No fix recorded

Published: Jul 10, 2026
Updated: Oct 25, 2026
EPSS: 0.1% · 5th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
imaginationtech	ddk	cpe:2.3:a:imaginationtech:ddk
google	android	cpe:2.3:o:google:android
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

imaginationtech ddkbefore 26.1
imaginationtech ddk26.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (imaginationtech). Independent of NVD's CPE analysis and usually ahead of it.

Imagination Technologies Graphics DDK
- 26.1 RTM2not affected
- 1.18 RTM2, 23.2 RTM2, 24.2 RTM2, 26.1 RTM1affected
- 25.1 RTM2 and later · up to and including 25.3 RTMaffected

Same product

imaginationtech: all records

Other highest-scoring records for the same primary product.

CVE-2026-16280GPU DDK - Integer overflow in _PMRLogicalOffsetToPhysicalOffset
39Monitor
CVE-2025-13952GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP
39Monitor
CVE-2026-21732GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation
38Monitor

Published before and after this one in the same product

← EarlierCVE-2026-21734Jun 26, 2026 · GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation
30Monitor
← EarlierCVE-2026-45195Jun 26, 2026 · GPU DDK - rgxfw_set_mips_fault_address(&psInit->sFaultPhysAddr) is untrusted
31Monitor
Later →CVE-2026-41154Jul 10, 2026 · GPU DDK - Incorrect Index Calculation in CMA Cleanup Path of AllocOSPages_Sparse
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2025-13952168 days apartGPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP
39Monitor
CVE-2025-58411178 days apartGPU DDK - Reservation::psMappedPMR can change while used by a freelist -> UAF
35Monitor
CVE-2026-2216570 days apartGPU DDK - UAF read of GLES3Context::psDrawParams and GLES3Context::psMode and UAF read/write of RMJob::apsCCBs
32Monitor
CVE-2026-2216670 days apartGPU DDK - Write UAF in KEGLGetPoolBuffers, WebGL reachable
32Monitor
CVE-2026-4974314 days apartGPU DDK - Write UAF of sync checkpoint in GPU kick function after export fence file descriptor is prematurely closed
31Monitor
CVE-2025-10865178 days apartGPU DDK - DevmemIntGetReservationData does not ref the PMR it returns
31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.imaginationtech.com/gpu-driver-vulnerabilities/

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records